525226613 has 4 divisors (see below), whose sum is σ = 525364620. Its totient is φ = 525088608.

The previous prime is 525226609. The next prime is 525226631. The reversal of 525226613 is 316622525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 441924484 + 83302129 = 21022^2 + 9127^2 .

It is a cyclic number.

It is not a de Polignac number, because 525226613 - 2² = 525226609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525226613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525226213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63128 + ... + 70961.

It is an arithmetic number, because the mean of its divisors is an integer number (131341155).

Almost surely, 2^525226613 is an apocalyptic number.

It is an amenable number.

525226613 is a deficient number, since it is larger than the sum of its proper divisors (138007).

525226613 is a wasteful number, since it uses less digits than its factorization.

525226613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138006.

The product of its digits is 21600, while the sum is 32.

The square root of 525226613 is about 22917.8230423398. The cubic root of 525226613 is about 806.8303773970.

The spelling of 525226613 in words is "five hundred twenty-five million, two hundred twenty-six thousand, six hundred thirteen".